@misc{indiciae0c1994888cf0,
  title = {Teaching and testing with videotape and Polavision.},
  author = {H Colcher},
  year = {1978},
  doi = {10.1016/s0016-5107(78)73505-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/648846/},
  note = {Source identifier: 648846}
}